<style>  
    div.main{
      border:dodgerblue 1px solid;
      width:100%;
    }
    div.class{
       width:100%;
    }
</style>
<div class="main">
<div class="tools">
<button id="saveSort">保存顺序</button>
</div>
<ul id="deptTree" class="ztree"></ul>
</div>
<script type="text/javascript" src="scripts/apps/admin/department/startsort.js"></script>